| Foundation ditch excavation and supporting structure is involving engineering geology, hydrogeology, engineering structures, construction technology and construction management. It is a comprehensive discipline which combines soil mechanics, hydraulics and structural mechanics together. Supporting structure is a integrality which is composed of some systems with independent function. Enclosure trench structure has to complete two functions, that is, soil-retaining and water-stop. Its form includes slope-excavation and simple fender, such as cantilever, gravity, internal stay, tension-anchoring, soil-nail wall and their combination and so on. A successful form of enclosure trench can not only guarantee the safety of trench itself, but also ensure the impact on environment it causes in permissive range.Foundation ditch project as a temporary project is very regional. This paper is intended to propose the most reasonable and practical feasible method in technical and economic aspects by discussing the current common processing modes of foundation ditch and side slope in Guangxi, taking the supporting form and construction monitoring of deeper foundation ditch of the Department of Guangxi Nanning East International Building for example, so as to provide some references for the similar projects in Guangxi province.The main work have done as follow:(1) Summarize the current research situation of deeper foundation ditch project and common supporting schemes of practical project aimed at geology of Guangxi and characteristics of local construction technology. Appraise synthetically the advantages and disadvantages of various schemes and find out the multi-objective optimization methods which are suitable for this kind of structure.(2) Make detailed theoretical analysis and design calculation to the support of deeper foundation ditch on the base of determinate supporting scheme according to the geology of Guangxi Nanning and the characteristics of this project.(3) Establish the relevant supporting construction scheme of deeper foundation ditch aimed at this project.(4) Make monitoring scheme plan to the construction process of practical project, make feedback information in time and analyze the result.Offer the reference and value to the same kind project through the above work. |
